The heat absorbed when 2.8 mol NH₄NO₃ is dissolved in water is 71.96 kJ.
What is heat?Heat is the transportation of energy to or from a thermodynamic system.
By the formula of heat
[tex]\rm (n) \times (delta\;Hrxn) = (qrxn)[/tex]
Where n = moles
Delta Hrxn is molar heat
q = heat
Putting the values in the equation
[tex]\rm qrxn = (2.8 mol) \times(25.7 kJ/mol) = 71.96 kJ[/tex]
Thus, the heat absorbed when 2.8 mol NH₄NO₃ is dissolved in water is 71.96 kJ.
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Which phrase describes how dna provides evidence to support that life changes over time?
Answer:
some animals exhibit similar biological proteins
DNA contains the information which cells use to make proteins
DNA contains the coding for the formation of protein
similarity or differences in DNA show evolutionary relationships
DNA contains genes, which pass the instructions to produce and deliver proteins for the body, to synthesise
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Which of these steps is considered the most important when researching and promoting an event?
Answer:
What factors are important in marketing and promoting an event?
What factors influence event marketing?
Budgets. Choosing how, when and where to market an event may depend on your budget. ...
Event importance. ...
Resource availability. ...
Target audience. ...
Taking advantage of time. ...
Promoting through traditional media. ...
Creating advertising materials. ...
Promoting on social media.
Explanation:
Which checking account would be best for nathan? account a account b account c account d
Answer:
Account Bank D
If the latin root "port" means "to carry," then the word "transport" means to walk across. to carry across. to cross over. to cross out.
Answer:
B: To carry across
Explanation:
I looked it up in the dictionary and I got it right on an edge exam.
Answer:
B
Explanation:
Blue collar workers typically receive __________ wages. a. commissioned b. hourly c. part-time d. salaried please select the best answer from the choices provided a b c d
The way blue collar workers typically receive their wages is; B: Hourly
How to Identify types of wages?
There are different ways of paying wages to workers. Wages is the renumeration due to a worker for a job done.
Now, the wages could be paid hourly, daily, weekly, monthly or any other agreed periods.
However, while white collar workers are usually paid monthly, blue collar workers are usually paid hourly.
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Answer: B. Hourly
Explanation: Blue collar workers typically receive hourly wages.
The recommended percent p (in decimal form) of nitrogen (by volume) in the air that a diver breathes is given by p=105.07d+33, where d is the depth (in feet) of the diver. find the depth when the air contains 47% recommended nitrogen by (a) solving an equation, and (b) using the inverse of the function. round to the nearest tenth.
The depth of the diver when the air contains 47% recommended nitrogen is -0.3 ft
To answer the question, we need to know what an equation is.
What is an equation?An equation is a mathematical function that shows the relationship between two variables.
Given that he recommended percent p (in decimal form) of nitrogen (by volume) in the air that a diver breathes is given by p = 105.07d + 33, where d is the depth (in feet) of the diver.
Solving for the depth by solving the equationTo find the depth when the air contains 47% recommended nitrogen, we solve the equation with p = 47%
So, p = 105.07d + 33
47% = 105.07d + 33
0.47 = 105.07d + 33
0.47 - 33 = 105.07d
-32.53 = 105.07d
d = -32.53/105.07
d = -0.3096 ft
d ≅ -0.3 ft
Solving for the depth using the inverse functionSince p = 105.07d + 33
Making d subject of the formula, we have
d = (p - 33)/105.07
Substituting p = 47% = 0.47, we have
d = (0.47 - 33)/105.07
d = -32.53/105.07
d = -0.3096 ft
d ≅ -0.3 ft
So, the depth of the diver when the air contains 47% recommended nitrogen is -0.3 ft
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Tim wants to buy a new subcompact car, which costs $20,000. he will pay a down payment of 10 percent and finance the rest at 12 percent. if he finances the vehicle over 5 years, how much will his total finance charge be?
Based on the calculations, Tim's total finance charge would be equal to $12,048.
What is total finance charge?The total finance charge can be defined as the amount of interest and other expenses which a customer would have to pay a lender, for borrowing an amount of money (credit).
In this scenario, Tim's monthly payment would be equal to $800.80 and after five (5) years, the total amount of money he'll pay is given by:
Total amount = $800.80 × 12 × 5
Total amount = $48,048.
For the total finance charge, we have:
Total finance charge = Total amount - Principal
Total finance charge = 48,048 - 36,000
Total finance charge = $12,048.
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Answer:
its in the 6 thousands !!
Explanation:
Not too sure
Who tells claudius and laertes about ophelia's death
Gertrude tells them if Ophelia's death
How does the use of verbal irony contribute to the reader's understanding of pip?
Answer:
b
Explanation:
cause it is bozo
What does islam have in common with judaism and christianity brainly
Answer:
They are all monotheistic faiths
Explanation:
Each believe in some sort of higher power & worship 1 god
On a national level, the american public was the violence faced by the civil rights protestors in birmingham.
Answer:
outraged.
Explanation:
they had to be outraged and I would be to.
On a national level the American public was outraged by the violence faced by the civil rights protestors in Birmingham.
What was Birmingham Campaign?One of the most important campaigns of the civil rights movement of the time was Project C or the Birmingham Campaign of the Spring of 1963. Protesters organized many marches and boycotts in downtown Birmingham such as in the City Hall.
People were protesting in a non-violent way against segregation laws when they where met by the police with violent use of the force with dogs and high-pressure fire hoses. On a national level. The American public was outraged by the violence faced by the civil rights protestors in Birmingham.
The Birmingham campaign, or Birmingham movement, was a movement founded in early 1963 by the Southern Christian Leadership Conference to pay application to the unification efforts of African Americans in Birmingham, Alabama. The civil rights movement was an unusual journey for balance.
Therefore, On a national level the American public was outraged by the violence faced by the civil rights protestors in Birmingham.
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The shortest sides of two similar polygons have lengths in the ratio 2:5. the perimeter of the smaller polygon is 20. the perimeter of the larger polygon is 125 100 50
Answer:
A similar triangle has the same ratio on every side, so that means the perimeter has the same ratio as well. Set up the proportion: 2/5 = 20/xmultiply the means and extremes to get2x = 100divide both sides by 2x = 50The perimeter of the larger polygon is 50
Explanation:
Not sure if this is right but hope this helped!
Describe four types of packaging that prevent tampering with medicine
Answer:
Explanation:
Anti tampering is a package designed to clearly indicate that a medicine has been previously opened! Some products us foil wraps, ...
Angelo has $700,000 he wants to save. if the fdic insurance limit per depositor, per bank, is $250,000, which of these ways of distributing his money between three banks will guarantee that all of his money is insured?
The amount of $700,000 is advisable to be deposited in three different banks for safety of Angelo's money.
What is a bank deposit?A deposit of money made with a bank to earn returns in the form of interest on such money is known as a bank deposit. The banks insure such deposits up to a certain limit, say $250,000.
Angelo can distribute his money into three different banks, with each deposit not exceeding $250,000 to ensure the safety of his bank deposits.
Hence, the way to insure the safety of Angelo's money via bank deposit is aforementioned.
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A number less than twice the square of the same number
Answer:
2x ^ 2 - 1
Explanation:
A manager drew this box-and-whisker plot to represent the ages of her 23 employees. every employee is a different age.
Answer:
Explanation:
About 5 employees have ages that are older than 54 years.
What is a box plot?
A box plot provides the summary of a data using the five number summary that is minimum, lower quartile, median, upper quartile and maximum.
From the diagram, the third quartile is 54 years. Hence 75% of the employees are between 35 to 57 years.
25% are older than 54 years, hence:
Employers older than 54 years = 25% of 23 employees = 5.75
About 5 employees have ages that are older than 54 years.
When nitroglycerin (c3h5on3o9) is detonated, the carbon and hydrogen atoms bonded to oxygen and nitrogen separate and heat is released. what type of energy is stored in the bonds?
The endothermic energy is released when the bond breaks between the atoms. The thermal kinetic energy is stored between the bonds of the nitroglycerin molecule.
What is Thermal kinetic energy?Thermal energy is the total of the kinetic and the potential energy. The kinetic energy is the energy possessed by the object respective to its motion.
The potential energy is the stored energy with respect to the position of the object. The combination of kinetic and potential energy makes the thermal energy and is in the form of heat.
Therefore, the release of the heat from bonds indicates thermal kinetic energy.
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How does the antagonist move the plot forward in this excerpt? nagaina moves the plot forward by running to the rat-hole, where rikki-tikki will destroy her. nagaina moves the plot forward by rustling her tail and turning her head round and round. rikki-tikki moves the plot forward by jumping up and down to confuse nagaina in their fight. rikki-tikki moves the plot forward by giving the egg to nagaina, thereby forcing her to run away.
Answer:
B
Explanation:
I’m smart
Answer:
a
Explanation:
Mycorrhizal fungi form a mutualistic relationship with plants. with which part of the plant are they associated? a) stems b) leaves c) roots d) flowers
Mycorrhizal fungi form a mutualistic relationship with the root part of a plant and is denoted as option C.
What is Mutualism?
This is defined as ecological interaction between two or more species in which each species benefit.
An example is between land plants relying on mycorrhizal fungi for phosphorus, while the fungus receives nutrients formed by the plant in return.
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Find the momentum of a 23.1 g bullet fired at 621 m/s
answer
p=14.345
explanation
we get that answer by using the formula p=mv
A brick is dropped from rest from a height of 4. 9 m. how long does it take the brick to reach the ground?
Answer:
1.0 s
Explanation:
Compare public debt to intragovernmental debt brainly
The difference is that public debt is owed to creditors while intragovernmental debt is owed to another part of government.
How to Classify Debts?The public debt is defined as the amount of money that a government owes to creditors. Now, this debt held by the public is a large portion of the national debt.
However, Intragovernmental debt is defined as debt that one part of the government owes to another part of the government. Generally, this debt is held in government trust funds, such as the Social Security trust funds.
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Read this first sentence of a passage summary: when hot magma heats trapped underground water, the water can explode from the ground in the form of a geyser. based on the information in the passage, which sentence would best complete the summary?
The sentence that would best complete the summary is There are two famous geysers in Yellowstone National Park, they are named Old Faithful and Steamboat Geyser.
What is Magma?Magma is known to be a very hot, molten rock that can be found under the earth crust as it is said to exist in the mantle.
Note that The sentence that would best complete the summary is There are two famous geysers in Yellowstone National Park, they are named Old Faithful and Steamboat Geyser.
See full question below
Read this first sentence of a summary of the
passage
When hot magma heats trapped underground
water, the water can explode from the ground in
the form of a geyser.
Based on the information in the passage, which
sentence would BEST complete the summary?
There are two famous geysers in Yellowstone
National Park, they are named Old Faithful and
Steamboat Geyser.
Because of changes in water temperature, geysers
are becoming less predictable and their numbers
are decreasing worldwide.
One famous American geyser erupts with such
regularity that it is named Old Faithful, but due to
shifting magma, geysers are generally,
unpredictable
Drilling for geothermal power has released so much
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A current is induced in a wire by moving the wire through a magnetic field
Answer:
true
Explanation:
How do the children's interactions with the man in the well reveal the theme of the text
Answer:
How do the children's interactions with the man in the well reveal the theme of the text
Of the 318 sophomores, 140 are taking algebra 2 and 102 are taking chemistry. of those that are taking chemistry, 76 are not taking algebra 2. if a sophomore is chosen at random, find the probability that they are taking algebra 2, if it is known that they take chemistry.
The probability that the sophomores are taking algebra 2 is equal to 0.63.
How to find the probability?In order to determine the probability that the sophomores are taking algebra 2, we would calculate the number of sophomores that takes algebra 2 but not chemistry and those that do not take chemistry.
For algebra 2 but not chemistry, we have:
Algebra 2 but not chemistry = 140 - 76
Algebra 2 but not chemistry = 64.
For those not taking chemistry, we have:
Not taking chemistry = 318 - 102
Not taking chemistry = 216.
Now, we can find the probability that the sophomores are taking algebra 2:
P(A) = 64/102
P(A) = 32/51
P(A) = 0.63.
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The experimental probability of rolling an odd number is %, which is % more than the theoretical probability.
Of the twenty times in this experiment the following are prime (3,5,2,7,3,7,2,2,7,3,3,5) or 12 of the twenty
12/20 = 6/10 = 60%
So 60% is the experimental probabilty.
The theoretical probability given that there are four prime numbers (2,3,5,7) out of 8 on the dice should be 50% because 1/2 of the numbers are prime.
The experimental probability is 10% more than the theoretical probability
60% - 50% = 10%Answer:
Explanation:
A 5 n force is applied to a 3 kg ball to change its velocity from +9 m/s to +3 m/s. the time for the collision is _____ seconds.
The time for the collision is 3.6S.
What is collision?The collision is an encounter between particles resulting in exchange or transformation of energy.
According to the question,
Force,
F = 5 N
Mass,
m = 3 kg
Velocity,
v₁ = 9 m/s and v₂ = 3 m/s
As we know,
F=m*(v/t)
so,
5=3*(9-3/t)
T=3*6/5
T=18/5
hence, the time for the collision is
T= 3.6S.
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Select the correct answer. the high temperatures at a park for 10 days are 40, 42, 41, 41, 43, 43, 44, 45, 44, and 45 degrees fahrenheit. what is the interquartile range of the data?
Answer:
The lower quartile is 41 while the upper quartile is 44
Thus the interquartile range is 3 (44-41)
hope this helps :)
Answer: the answer is 3
Explanation:
The first one is correct
The water from hot springs near the ebeko volcano in the pacific ocean has a very low ph. what does a low ph indicate about the water?
The water of the hot spring near ebeko volcano in the Pacific Ocean has low pH, which means that the water is acidic. Acids have low pH.
What is pH?pH is the measurement of acidic and alkaline of any liquid. The acids have low pH than 7 and bases have high pH than 7.
Low pH water will corrode or dissolve metals and other substance in it.
Thus, the water of the hot spring near ebeko volcano in the Pacific Ocean has low pH, which means that the water is acidic. Acids have low pH.
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